The fundamental challenge is cultural. Fraser FN's have abandoned traditional harvest methods in favour of easier and individualistic gill nets. Selective harvest methods such as fish traps require significant infrastructure investment and a community of harvesters, whereas gill nets require limited investment for return on effort/expense that is easily managed by an individual harvester. Address the barriers. Where's the impetus for change? As much as I personally support selective harvest, its unrealistic to see the shift unless there is strong impetus for change.